core

#### About Optical Character Recognition (OCR)

The GD&T Selection Mode (from Capture) and GD&T Selection Mode (from File) methods both use OCR to identify the GD&T tolerance information to import.

While an OCR method is in use, DO NOT Copy or Cut information to the Clipboard, or you may lose that information.

This occurs because PC-DMIS monitors the Clipboard. If it detects something in the Clipboard, it assumes it's a GD&T tolerance, and it attempts to import it into PC-DMIS. When it tries to import the data it clears out the Clipboard.

If PC-DMIS cannot parse the information from the Clipboard, it shows an error message that says, "Cannot parse the selected note".

For more information on those methods, see the "Using GD&T Selection Mode (from Capture)" and "Using GD&T Selection Mode (from File)" topics above.

Resolution

OCR detection works best with an image that has at least 300 DPI. Lower resolutions may produce less accurate results.

Supported FCF Types

These OCR method above supports these FCF types:

- The 14 characteristic symbols

- The Diameter symbol

- M, L, P, and other modifier symbols bounded by circles

- Data within the boxes and size data above boxes

- Single-line tolerances, multi-line non-composite tolerances, composite tolerances

Unsupported Items

The OCR methods above do not support some complex elements. These include items like square brackets, extended characters, double-headed arrows, and so on.

FAQ

Question: What happens if my routine already has a datum defined with the same label as a datum defined in the drawing?

Answer: If a datum definition with the same name already exists in your routine, PC-DMIS does not request that you to create a new datum feature of the same name. Instead, PC-DMIS uses the existing datum feature from your routine.

Question: Do I need to use OCR to recognize a datum all by itself?

Answer: No. Since datums are always defined for a GD&T tolerance, the OCR does not recognize them as separate GD&T notes. You only need define the GD&T tolerances and PC-DMIS prompts you to select the datum features as needed.

Question: What happens if there is size text immediately above the GD&T tolerance?

Answer: PC-DMIS parses this additional line and assigns the data to created FCF.

Question: What happens to multi-line non-composite GD&T tolerances?

Answer: PC-DMIS imports these as two separate FCF commands.

More:

OCR Selection Preview Window

OCR Widget